Merge branch '472193-clean-up-the-security-policy-pipeline-execution-action-experiment-processing' into 'master' 

Remove custom CI action from processing

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/159607



Merged-by: drew stachon <730684-drew@users.noreply.gitlab.com>
Approved-by: Andy Schoenen <asoiron@gitlab.com>
Approved-by: Sashi Kumar Kumaresan <skumar@gitlab.com>
Approved-by: drew stachon <730684-drew@users.noreply.gitlab.com>
Co-authored-by: Martin Čavoj <mcavoj@gitlab.com>